Image pickup system
An image pickup system is an image pickup system in which an image pickup device arranged at a distal end of an insertion section of an endoscope and a processor can communicate with each other. A group of multiple control parameters to be collectively transmitted and checksum codes related to the parameters are transmitted from the processor to the image pickup device, and the image pickup device reflects the control parameters on a register only when all the received multiple control parameters are normal, on the basis of the checksums.
1. An image pickup system comprising:
an image pickup apparatus generating and outputting an image signal by receiving a light and performing photoelectric conversion;
a control apparatus sending out control parameters for performing drive control of the image pickup apparatus,
wherein the image pickup apparatus and the control apparatus are capable of communicating with each other,
the image pickup system further comprising:
a first communication section being provided in the control apparatus and transmitting multiple control parameters for controlling photographing of the image pickup apparatus to the image pickup apparatus;
a second communication section being provided in the image pickup apparatus, the second communication section receiving the multiple control parameters transmitted from the first communication section, storing the received multiple control parameters in a temporary register, and transmitting the received multiple control parameters to the first communication section;
a judgment section being provided in the control apparatus and judging, in the control apparatus, after receiving the multiple parameters by the second communication section, whether all of the multiple control parameters transmitted from the first communication section in the control apparatus to the second communication section are normally transmitted, by comparing the multiple control parameters transmitted by the first communication section with the multiple control parameters received by the first communication section;
a control-apparatus-side control section being provided in the control apparatus and transmitting, when judging that all of the multiple control parameters received by the image pickup apparatus are normally transmitted on the basis of a result of the judgment by the judgment section, a control signal permitting the image pickup apparatus to reflect the multiple control parameters related to the judgment result, to the image pickup apparatus via the first communication section; and
a photographing control section being provided in the image pickup apparatus and causing the multiple control parameters stored in the temporary register to be stored in a main register and reflected on photographic control, on the basis of the result of the judgment by the judgment section.
2. The image pickup system according to claim 1 , wherein
the first communication section transmits the multiple control parameters for controlling photographing of the image pickup apparatus to the image pickup apparatus as well as transmitting an error detecting code or an error correcting code used when judging or correcting an error of the multiple control parameters;
the second communication section receives the control parameters and the error detecting code or the error correcting code transmitted from the first communication section; and
the judgment section judges whether the multiple control parameters received by the second communication section are normally transmitted or not on the basis of the error detecting code or the error correcting code transmitted by the control apparatus.
3. The image pickup system according to claim 2 , wherein, when judging that all the multiple control parameters, which are a preset set, received by the second communication section have been received without an error, the judgment section judges that the multiple control parameters received by the second communication section are normally transmitted.
4. The image pickup system according to claim 2 , wherein, when judging that the multiple control parameters received by the second communication section are not normally transmitted on the basis of the result of the judgment by the judgment section, the photographing control section does not reflect information about the received control parameters.
5. The image pickup system according to claim 2 , wherein, when judging that the multiple control parameters received by the second communication section are not normally transmitted on the basis of the result of the judgment by the judgment section, the photographing control section stores the communication result.
6. The image pickup system according to claim 2 , wherein the judgment section is provided in the image pickup apparatus.
7. The image pickup system according to claim 1 , wherein
the first communication section is capable of transmitting and receiving data to and from the image pickup apparatus, transmits the multiple control parameters for controlling photographing of the image pickup apparatus to the image pickup apparatus, and further receives communicated information about the multiple control parameters from the image pickup apparatus;
the judgment section judges whether the multiple control parameters received by the image pickup apparatus are normally transmitted or not on the basis of the communicated information about the multiple control parameters from the image pickup apparatus;
the second communication section of the image pickup apparatus is capable of transmitting and receiving data to and from the control apparatus, receives the multiple control parameters transmitted from the first communication section as well as transmitting the communicated information about the received multiple parameters to the control apparatus; and
the image pickup apparatus comprises the photographing control section for performing photographing control by the multiple control parameters received by the second communication section, on the basis of the result of the judgment by the judgment section.
8. The image pickup system according to claim 7 , wherein
the first communication section further transmits a data transmission requesting signal requesting the image pickup apparatus to transmit the communicated information about the multiple control parameters from the image pickup apparatus, to the image pickup apparatus; and
the second communication section transmits the communicated information about the multiple control parameters to the control apparatus in response to the data transmission requesting signal.
9. The image pickup system according to claim 7 , wherein
the control-apparatus-side control section transmits the control signal only when judging that the multiple control parameters received by the image pickup apparatus are not normally transmitted on the basis of the result of the judgment by the judgment section; and
the photographing control section performs photographing control on the basis of the control signal.
10. The image pickup system according to claim 7 , wherein the photographing control section performs photographing control without reflecting the multiple control parameters related to the judgment result, on the basis of the control signal.
11. The image pickup system according to claim 1 , wherein when judging that even one of the multiple parameters received by the image pickup apparatus is not normally transmitted on the basis of the judgment result by the judgment section, the control-apparatus side control section transmits a control signal not permitting the image pickup apparatus to reflect any of the multiple control parameters related to the judgment result, to the image pickup apparatus via the first communication section.
12. The image pickup system according to claim 1 , wherein all of the parameters mean all control parameters in a group of control parameters constituted of some control parameters among the multiple control parameters.